This article presents the measurement of the exclusive photoproduction of \(\Upsilon \)  and \(J/\psi \)  mesons from protons in pPb collisions at a nucleon–nucleon centre-of-mass energy of \(\sqrt{s_\text{NN}} = 5.02\)  TeV with the CMS detector [1]}. Ultraperipheral collisions (UPCs) of protons or ions occur at the impact parameter is larger than the sum of their radii, therefore it is largely suppressed by hadronic interaction [2]}. In UPCs, one of the incoming hadron emits quasi real photon and they converted into vector meson state by a color singlet gluon exchange process with the other hadrons. Since incoming hadrons remain intact in the process and vector meson is produced in the event, the process is called “exclusive”. The study of exclusive quarkonia photoproduction can provide a unique probe of the target hadron structure, with the large mass of the \(J/\psi \)  and \(\Upsilon \)  mesons providing a hard scale for calculations based on perturbative quantum chromodynamics (pQCD) [3]}. The study of the photoproduction of \(\Upsilon \)  and \(\rho ^{0}\)  mesons from proton is sensitive to the generalized parton distributions (GPDs), which can be approximated by the square of the gluon density in the proton. Exclusive vector photoproduction is very interesting because the Fourier transform of the \(t\)  distribution is related to the two-dimensional distribution of the struck partons in the transverse plane. Here, \(t\)  indicates the squared four-momentum transfer at the proton vertex. In this proceedings, the \(|t| \approx p_\text{T}^{2} \)  distributions of \(\Upsilon \)  and \(\rho ^{0}\)  are presented.
